The weather, month by month

  • March is still cool and often rainy: bring a coat, a waterproof and closed shoes. It is the quietest month of spring, with lower accommodation prices.
  • April and May are among the best months of the year: about 17 to 22 °C average highs, less rain and long days.
  • Evenings stay cool, especially by the water and on the Bosphorus: a cardigan or light jacket is needed, even in May.

To compare with the other seasons, our guide to the best time to visit Istanbul details the climate month by month.

Tulips: the April festival

The tulips of Emirgan Park

The tulip is one of Istanbul's symbols, and every April the municipality plants millions of bulbs in the city's parks. The festival, renamed "Lale Bayramı" (tulip festival) since 2024, ran from 1 to 30 April in 2026; the dates of the 2027 edition have not been announced, but the festival follows the same calendar every year, across the whole of April. Access to the parks is free. Details are on the Istanbul tulip festival page.

The best places:

  • Emirgan Park, on the Bosphorus, is the showcase of the festival: sloping lawns, beds and whole patterns made of tulips. See the Emirgan Park page.
  • Gülhane Park, at the foot of Topkapı, is the easiest to fit into a visit to the old city. See the Gülhane Park page.
  • The Nezahat Gökyiğit Botanic Garden, on the Asian shore, has fine beds, quieter than in the big parks: see the Nezahat Gökyiğit Botanic Garden page.

A bed of tulips

Flowering depends on the weather: a cold spring delays it, a warm one brings it forward. To see it at its best and without crowds, come on a weekday, preferably in the morning. On April weekends the big parks and the roads leading to them are jammed.

Judas trees (erguvan)

The erguvan (Judas tree, Cercis siliquastrum) is the other tree of Istanbul's spring. It flowers bright pink before the leaves appear, generally during April, and its blossom is so distinctive that Istanbulites speak of an "erguvan colour". You see them everywhere: in the parks, on the slopes of the Bosphorus shores, around the fortress of Rumeli Hisarı, in the gardens of the seaside districts. As with the tulips, the date depends on the weather; flowering is brief, one to two weeks for any given tree.

The nicest way to see them is by boat: a Bosphorus cruise or a simple ferry from one shore to the other gives views of the flowering hills. On foot, the village of Kuzguncuk and the parks of Emirgan and Gülhane are good starting points.

Public holidays and festivals

The beds of the Nezahat Gökyiğit Botanic Garden

  • 23 April: National Sovereignty and Children's Day, a public holiday. Parades, shows and children's events in the city; government offices are closed.
  • 1 May: Labour Day, a public holiday. Marches and rallies can cause street closures and transport disruption in the centre: allow extra time.
  • Night of 5 to 6 May: Hıdırellez, a popular festival marking the arrival of spring, with bonfires, music and wishes. Gatherings take place in several districts of the city; programmes change every year, so check with the municipality.
  • 19 May: Commemoration of Atatürk, Youth and Sports Day, a public holiday.
  • Ramazan Bayramı (festival at the end of Ramadan): Tuesday 9 to Thursday 11 March 2027. Ramadan runs from 8 February to 8 March 2027; see the Ramadan in Istanbul page.
  • Kurban Bayramı (Feast of the Sacrifice): Sunday 16 to Wednesday 19 May 2027. Transport and accommodation are in high demand, and many shops close. Book early.

During religious holidays, museums and monuments generally stay open, sometimes with changed hours; check before you go.

What to do in spring

  • Parks and gardens: besides the tulips, our guide to Istanbul's parks and gardens presents twelve green spaces, from Gülhane to Belgrad Forest.
  • The Bosphorus by boat: April and May offer the softest light of the year.
  • The Princes' Islands: spring is the ideal time, before the summer crowds; see the Princes' Islands page.
  • A day on the Asian shore: Kadıköy and Moda, with sunset on the Moda lawns.
  • Rainy days: March and sometimes April are damp; keep museums and hammams in reserve, detailed in our guide to what to do in Istanbul when it rains.

Practical tips

  • Book early: April and May are months of high demand for accommodation. Our guide to where to stay in Istanbul compares the districts.
  • Avoid the crowds: visit museums and monuments early in the morning and on weekdays; keep the flowering parks for a time slot other than the weekend.
  • Dress in layers: the differences are large between morning, sunny afternoon and evening by the water.
  • Expect rain: spring showers are short but frequent in March and April; a small umbrella is enough.
  • Itinerary: to organise your visits, follow our guide to Istanbul in 3 days and slot a flowering park into it.